Joint for sheathed conductors.



mT. E. MURRAY.-

JOINT FOR SHEATHED CONDUOTORS.

APPLICATION FILED NOV. 20, 1911. I 1 I Patented June- 4, i912.

THOMAS E. MUERAY, OF NEW YGEK, N.

i,tb28,25"1.

Original application iiled June 29, 1911, Serial No. 636,015. Divided and this application filed November 1 Specification of Letters Patent.

20, 1911. Serial No. 661,327.

To all-whom it may concern Be it known that I, THOMAS E. MURRAY, a citizen of the United States, residing at New York, in the county ofNew York and State of New York, have invented a certainnew and useful 'lmprovement in Joints for Sheathed Conductors, of which the following is a specification.

The invention relates to joints between metallic bodies, such as pipes, conductor sheathi s, and the like, and supports or re" ceptacles therefor, and consists in an en largement formedupon said body and filling the opening in the support receiving the same, by consolidating within said opening a comminuted mass of the same metal-as that forming said body, and causing said consolidated mass to become coherent with the metal of the said, body: so that the body and the enlargement thereon become integral, and the enlargement closes the jointbetween said body and said support. In the present embodiment of my invention, the enlargement is formed by consolidating lead floss upon and around the lead sheathing of an electrical conductor in an opening in a porcelain base block.

In theaccompanying drawingsl*igure 1 is a cross section of a base block, to which my device is shown applied, said section being taken on the line a", 00, of Fig. 2. Fig. 2 is a horizontal section on the line y, y of Fig. 1. Fig. 3 is a vertical section on the line a, c, of Fig. 2.

.Similar letters of reference indicate like arts.

My invention is here shownapplied to a base block, or other support, A, preferably of porcelain or other refractory insulating material. In said support is a compartment B, in which is a pair of metallic clips G, secured in place by the screw D, to which clips the circuit conductor E, which forms the core of the lead sheathed cablc,-is connected. Said cable comprises, as usual, an inner envelop l of insulating material, and an external lead sheathing G. A cylindrical recess is formed in one wall of 'the support, and in the partition H, between said recess and the compartment B, is made a hole of sufiicicnt size to permit a denuded end portion I of the conductor E to enter the com-- pertinent B and be secured to the clips G by means of an arched plate J. llhe shoulder formed by the extremity of the sheathing and envelop then abuts against the partition H. In the annular space around the sheathing u lead floss K is gradually tamped and firmly consolidated. During the consolidating operation,

the tamping tool should be used to force the lead floss somewhat into as wellv as against the lead sheathing, so that it coheres to said sheathing. In

this way, the metal of the floss and the metal of the sheathing becomes very closely united,

and the consolidated floss becomes practically a thicker part of the sheath. In. other words, I obtain the same conditions as if the part of the sheath inclosed in the recess were I integrally thicker than elsewhere, with this difference, however: that while a previously thickened solid portion of the sheath could not-certainly be made to fit the recess with perfect accuracy, the consolidated lead flpss enlargement can be so made, because as it is tampe'd down it adapts itself to every possible inequality in the opening.

Molten lead run into the space between sheathing and base does not meet. the conditions of the problem; first, because'it- 're-. quires melting apparatus and immediate use after melting, which is often very inconvenient and practically prohibitory, and second, because the molten lead instantly chilled by contact with cable and base merely forms a casting, which shrinks oncooling and does not perfectly unite with either the sheathing or the support, so that animperfect joint results.

This application is a divisionof my appli caticn No. (336,015, filed June season.

I claim:

1. A support, having an opening anrLin said opening a body of ductile metal, and, coherent to said body, an enlargement formed by consolidating thcreona commi- 

